MAGETWO-88054: Stabilize S1 build

--move migration to Staging module

Author: Sergii Kovalenko

app/code/Magento/Bundle/etc/db_schema.xml

@@ -45,10 +45,6 @@
         <constraint xsi:type="foreign" name="CAT_PRD_BNDL_OPT_VAL_OPT_ID_CAT_PRD_BNDL_OPT_OPT_ID"
                     table="catalog_product_bundle_option_value" column="option_id"
                     referenceTable="catalog_product_bundle_option" referenceColumn="option_id" onDelete="CASCADE"/>
-        <constraint xsi:type="unique" name="CATALOG_PRODUCT_BUNDLE_OPTION_VALUE_OPTION_ID_STORE_ID">
-            <column name="option_id"/>
-            <column name="store_id"/>
-        </constraint>
         <constraint xsi:type="unique" name="CAT_PRD_BNDL_OPT_VAL_OPT_ID_PARENT_PRD_ID_STORE_ID">
             <column name="option_id"/>
             <column name="parent_product_id"/>